A menu–driven facility for complex sample size calculation in randomized controlled trials with a survival or a binary outcome: Update

Friederike M.-S. Barthel
UK Medical Research Council

Patrick Royston
UK Medical Research Council

Abdel Babiker
UK Medical Research Council

Abstract. Royston and Babiker (2002) presented a menu-driven Stata program for the
calculation of sample size or power for complex clinical trial designs under
a survival time or binary outcome. In the present article, the package is
updated to Stata 8 under the new name ART. Furthermore, the program
has been extended to incorporate noninferiority designs and provides more
detailed output. This package is the only realistic sample size tool for
survival studies available in Stata.